Self-damping circuit
US3940635A · kind A · utility
6Cited by
7References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 29, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Aug 29, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10H2230/351
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
A Zimbelstern system or sequential bell ringing system in which a sequential counter actuates a set of self-damping circuits in a predetermined repeating sequence, the self-damping circuits each enabling a different set of sinusoidal tone sources in such relative amplitudes and with such relative rise and decay envelopes as to simulate the sounds of sequentially sounding bells when electro-acoustically reproduced.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.